In the OT, what did God actually do to make the whole of humanity's lot better?
According to the OT, God created humanity, gave Israelites a spiritual leader, led them out of slavery, gave them commandments (including one against killing), gave them kings, and prepared them for the coming of the messiah. Overall, the OT is the story of God's transformation of the Israelites from a directionless tribe into a nation of believers.
What did Jesus do, other than issue a series of vague offers that were completely unverifiable; offers that anyone could have made?
According to the Bible, Jesus opened the gates of Heaven and made salvation possible, which is not something that just anyone could do. He also directed his followers against treating other people cruelly.
NB that if McClane hadn't interfered with Gruber's plan, Gruber would have killed about thirty people. NB also that McClane killed those ten people to save those thirty. I could go on.
Good, now we're establishing that it's not just a matter of sheer body counts. Things such as potential harm and future plans should also be taken into account. This is in opposition to the OP, which claims that Christians are "blind" when judging the evilness of God and Satan, citing only acts directly recorded as having taken place. Much as you do not simply look at the body counts at the end of the movie and draw your conclusion, but instead look at the bigger picture when making your assessment.
Oddly enough, according to the OP, Christians are unintelligent, gullible, or brainwashed when they try to use their brains instead of just comparing body counts.
There's a bit of a difference between killing a criminal and killing an innocent person.
I disagree with that, and I think much of the industrialized world would also disagree, which would explain the general decline of stoning adulterers and capital punishment in the western world.
It's interesting that the two comparisons you come up with are both from fiction. Do you have any nonfictional analogies?
In the Iraq war, the number killed by "good guy" US far outnumbers those killed by "bad guy" Iraq and/or terrorists.
In World War 2, the Japanese civilians killed by the "good guy" US's bombs were more than double the number of US citizens killed by the Japanese.
I'm not sure why you find it ridiculous that Christians consider Satan the downfall of mankind and the father of all lies.
Yahweh created Satan, so Yahweh is ultimately the source of anything Satan does.
Irrelevant to what I actually wrote, since whether you personally hold that God inherits X quality from Satan has nothing to do with whether Satan has X quality.
Also, I challenge the assertion that a creator is always the source of anything a creation does. Can we say that the creator of a plastic bag is responsible for those who are intentionally suffocated by them? Perhaps in an abstract, philosophical sense, but certainly not in any meaningful sense of the word. The creator sets the features and limitations of the thing created, but that's not the same as the actual actions the creation performs.
Generally speaking, no, but when the body count runs up into the millions, I personally tend to consider other factors as irrelevant.
I see. Thank you for your personal opinion on the matter. However, per the OP, I do not see why Christians should automatically be assumed to be "blind" if they do not all share the same personal opinions espoused in the OP.